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Endurcissement du naissain d’huîtres creuses, Crassostrea gigas par le niveau d’exondation ou la densité d’élevage : récapitulatif d’essais conduits entre 2004 et 2007 en rivière d’Auray (56), pour réduire les mortalités estivales ArchiMer
Mazurie, Joseph; Bouget, Jean-francois; Langlade, Aime; Claude, Serge.
This report summarizes a list of husbandry experiments conducted between 2004 and 2007 so as to reduce the summer mortalities of the oyster Crassostrea gigas by farming practices. The Japanese technique so‐called “hardening”, based on nursing the young oysters (less than 1 year‐old) in intertidal areas with high air exposure, is tested and adapted. Significant improvements of survival rates (e.g. 60% survival instead of 40% survival rate) have been obtained by transferring the spat only a few month (between march and june‐july) on “high” inter‐tidal farming plots (up to 40% of mean air exposure time). In such conditions, growth is transiently reduced, but a compensatory growth seems to happen when oysters are transferred back on low concessions. Another...
Tipo: Text Palavras-chave: Huître; Crassostrea gigas; Mortalité; Endurcissement; Exondation; Densité; Oyster; Crassostrea gigas; Mortality; Hardening; Air exposure; Density.
Ano: 2011 URL: http://archimer.ifremer.fr/doc/00042/15350/12705.pdf
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